$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-design.git /var/lib/mock/f40-build-2590608-62628/root/chroot_tmpdir/scmroot/gap-pkg-design
Cloning into '/var/lib/mock/f40-build-2590608-62628/root/chroot_tmpdir/scmroot/gap-pkg-design'...
$ git fetch origin 65987db01a6bcd5de730e91e1047549d08d8cd1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-design
 * [new ref]         65987db01a6bcd5de730e91e1047549d08d8cd1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65987db Rebuild for gap 4.13.0